Manual

4. Compass calibration
To calibrate the compass, go to the menu item "Compass":
1. To enable and set in the drop-down list choose Compass 1 (Arrow1,2)
2. Turn off Automatic rejection (Arrow 3)
3. In the Compass # 1 group, select "Use this compass" (arrow 4)
Next, you need to calibrate the compass. Place the copter in the horizon and press
"Start" button, in the "Onboard Mag Calibration" group rotate the copter around
the vertical axis a couple of turns against, and then clockwise, then rotate the copter
90 degrees relative to the horizon, repeat the rotation for each side, the progress
bar "Mag 1" will grow from 0 to 100%.